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This commit is contained in:
Jakub Melka
2019-05-07 18:21:22 +02:00
parent 0447b9e3a1
commit 3358d49240
29 changed files with 4648 additions and 4 deletions
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56
PdfForQtLib/sources/pdfcolorspaces.cpp
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@ -85,6 +85,54 @@ size_t PDFDeviceCMYKColorSpace::getColorComponentCount() const
return 4;
}
QImage PDFAbstractColorSpace::getImage(const PDFImageData& imageData) const
{
if (imageData.isValid())
{
QImage image(imageData.getWidth(), imageData.getHeight(), QImage::Format_RGB888);
image.fill(QColor(Qt::white));
// TODO: Implement images with bits different than 8
Q_ASSERT(imageData.getBitsPerComponent() == 8);
unsigned int componentCount = imageData.getComponents();
if (componentCount != getColorComponentCount())
{
throw PDFParserException(PDFTranslationContext::tr("Invalid colors for color space. Color space has %1 colors. Provided color count is %4.").arg(getColorComponentCount()).arg(componentCount));
}
PDFColor color;
color.resize(componentCount);
for (unsigned int i = 0, rowCount = imageData.getHeight(); i < rowCount; ++i)
{
const unsigned char* rowData = imageData.getRow(i);
unsigned char* outputLine = image.scanLine(i);
for (unsigned int j = 0; j < imageData.getWidth(); ++j)
{
const unsigned char* currentData = rowData + (j * componentCount);
for (unsigned int k = 0; k < componentCount; ++k)
{
constexpr const double COEFFICIENT = 1.0 / 255.0;
color[k] = currentData[k] * COEFFICIENT;
}
QColor transformedColor = getColor(color);
QRgb rgb = transformedColor.rgb();
*outputLine++ = qRed(rgb);
*outputLine++ = qGreen(rgb);
*outputLine++ = qBlue(rgb);
}
}
return image;
}
return QImage();
}
PDFColorSpacePointer PDFAbstractColorSpace::createColorSpace(const PDFDictionary* colorSpaceDictionary,
const PDFDocument* document,
const PDFObject& colorSpace)
@ -708,4 +756,12 @@ PDFColorSpacePointer PDFSeparationColorSpace::createSeparationColorSpace(const P
return PDFColorSpacePointer(new PDFSeparationColorSpace(qMove(colorName), qMove(alternateColorSpace), qMove(tintTransform)));
}
const unsigned char* PDFImageData::getRow(unsigned int rowIndex) const
{
const unsigned char* data = reinterpret_cast<const unsigned char*>(m_data.constData());
Q_ASSERT(rowIndex < m_height);
return data + (rowIndex * m_stride);
}
} // namespace pdf